package cn.tedu._07springaop.aop;

import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.*;
import org.springframework.stereotype.Component;

import java.util.Arrays;

@Aspect
@Component
public class LogAspect {

//    @Before(value = "execution(public int cn.tedu._07springaop.aop.CalculatorImpl.*(..))")
//    public void beforeMethod(JoinPoint joinPoint) {
//        String name = joinPoint.getSignature().getName();
//        String args = Arrays.toString(joinPoint.getArgs());
//        System.out.println("1.前置通知"+name+"方法开始，参数为:"+args);
//
//    }
//
//    @AfterReturning(value = "execution(public int cn.tedu._07springaop.aop.CalculatorImpl.*(..))",
//    returning = "r")
//    public void AfterReturningMethod(JoinPoint joinPoint,Object r){
//        String name = joinPoint.getSignature().getName();
//        System.out.println("2.返回通知:"+name+"方法结束，结果为:"+r);
//    }
//
//    @AfterThrowing(value = "execution(public int cn.tedu._07springaop.aop.CalculatorImpl.*(..))",
//    throwing = "ex")
//    public void afterReturningMethod(JoinPoint joinPoint ,Throwable ex){
//        String name = joinPoint.getSignature().getName();
//        System.out.println("3.异常通知:"+name+"方法抛出异常:"+ex.getMessage());
//    }
//
//    @After(value = "execution(public int cn.tedu._07springaop.aop.CalculatorImpl.*(..))")
//    public void afterMethod(JoinPoint joinPoint){
//        System.out.println("4.后置通知");
//    }

    @Around(value = "execution(public int cn.tedu._07springaop.aop.CalculatorImpl.*(..))")
    public Object aroundMethod(ProceedingJoinPoint joinPoint){
        Object result = null;

        try {
            System.out.println("环绕通知:前置通知");
            result = joinPoint.proceed();
            System.out.println("环绕通知:返回通知");
        } catch (Throwable e) {
            System.out.println("环绕通知:异常通知");
            throw new RuntimeException(e);
        }finally {
            System.out.println("环绕通知:后置通知");
        }
        return result;

    }

}
